One vertex per element, one color per generator, with an edge from x to x·s.
(2,3)(6,7)(9,10)(11,15)(12,14)(13,16)(17,18)(19,22)(20,21)(23,24)(25,26)(27,28)(29,31)(30,32) involution — undirected(1,2,5,3)(4,7,8,6)(9,11,13,12)(10,14,16,15)(17,19,23,21)(18,20,24,22)(25,27,29,32)(26,28,31,30)(9,11,13,12)(10,15,16,14)(17,20,23,22)(18,21,24,19)(25,27)(26,30)(28,31)(29,32)(1,3,5,2)(4,7,8,6)(9,12,13,11)(10,14,16,15)(17,21,23,19)(18,20,24,22)(1,4)(2,6)(3,7)(5,8)(9,10)(11,15)(12,14)(13,16)(17,22,23,20)(18,19,24,21)(25,28,29,30)(26,27,31,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.